Swimming at the 2018 Asian Games – Women's 400 metre individual medley
# Swimming at the 2018 Asian Games – Women's 400 metre individual medley

The women's 400 metre individual medley event at the 2018 Asian Games took place on 21 August at the Gelora Bung Karno Aquatic Stadium.

## Schedule

All times are Western Indonesia Time (UTC+07:00)

| Date | Time | Event |
| - | - | - |
| Tuesday, 21 August 2018 | 09:21 | Heats |
| Tuesday, 21 August 2018 | 18:21 | Final |

## Records

Prior to this competition, the existing world, Asian and Games records were as follows.

| World Record | Katinka Hosszú (HUN) | 4:26.36 | Rio de Janeiro, Brazil | 6 August 2016 |
| - | - | - | - | - |
| Asian Record | Ye Shiwen (CHN) | 4:28.43 | London, United Kingdom | 28 July 2012 |
| Games Record | Ye Shiwen (CHN) | 4:32.97 | Incheon, South Korea | 23 September 2014 |

## Results

### Legend

* DNS — Did not start

### Heats

| Rank | Heat | Athlete | Time |
| - | - | - | - |
| 1 | 2 | Yui Ohashi (JPN) | 4:42.11 |
| 2 | 2 | Zhou Min (CHN) | 4:42.83 |
| 3 | 1 | Sakiko Shimizu (JPN) | 4:45.88 |
| 4 | 1 | Nguyễn Thị Ánh Viên (VIE) | 4:47.56 |
| 5 | 2 | Kim Seo-yeong (KOR) | 4:48.59 |
| 6 | 1 | Yang Chang (CHN) | 4:53.56 |
| 7 | 1 | Azzahra Permatahani (INA) | 4:53.58 |
| 8 | 2 | Lam Hoi Kiu (HKG) | 4:58.54 |
| 9 | 2 | Mai Thị Linh (VIE) | 5:03.65 |
| 10 | 1 | Karen Liu (HKG) | 5:04.00 |
| 11 | 1 | Elizaveta Rogozhnikova (KGZ) | 5:12.47 |
| — | 2 | Ressa Kania Dewi (INA) | DNS |

### Final

| Rank | Athlete | Time |
| - | - | - |
| | Yui Ohashi (JPN) | 4:34.58 |
| | Kim Seo-yeong (KOR) | 4:37.43 |
| | Sakiko Shimizu (JPN) | 4:39.10 |
| 4 | Zhou Min (CHN) | 4:42.75 |
| 5 | Nguyễn Thị Ánh Viên (VIE) | 4:42.81 |
| 6 | Yang Chang (CHN) | 4:47.24 |
| 7 | Lam Hoi Kiu (HKG) | 4:55.42 |
| 8 | Azzahra Permatahani (INA) | 4:58.89 |
